Surge arresters

To protect AC and DC railway vehicles from lightning and switching overvoltages, Sécheron experts recommend installing a surge arrester (SA1) immediately after the pantograph. For AC railway vehicles, we recommend installing a second surge arrester (SA2) between the main AC vacuum circuit breaker and the traction transformer.

Surge arresters

To protect AC and DC railway vehicles from lightning and switching overvoltages, Sécheron experts recommend installing a surge arrester (SA1) immediately after the pantograph. For AC railway vehicles, we recommend installing a second surge arrester (SA2) between the main AC vacuum circuit breaker and the traction transformer.

Main benefits

Best-in-class surge arresters

Effective coordination of electrical protection

Simpler engineering, logistics, and installation

Proven designs with long service records

Expert customer support

Worldwide after-sales service

Product environment

Sécheron has been delivering electrical safety components and solutions to the railway industry for decades. To protect AC and DC railway vehicles from lightning and switching overvoltages, we strongly recommend installing a surge arrester (SA1) immediately after the pantograph. For AC railway vehicles, we recommend installing a second surge arrester (SA2) between the main AC vacuum circuit breaker and the traction transformer to protect high-voltage circuits from surges due to current chopping when low magnetization currents are interrupted by the CB’s vacuum interrupter.

All of our components and solutions are backed by Sécheron expert service during all phases of your project. Let us recommend the best solution to meet your needs. Whatever your choice, you can count on efficient support worldwide for the entire lifetime of your product.